Fountain-pen



G. H. MACDONOUGH.

FOUNTAIN PEN.

APPLICATION FILED APR. 10, 1919.

1,357,068, Patented Oct. 26, 1920.v

Invenior: fieoiegeflflacdonough,

UNITED STATES PATENT orrlcs.

GEORGE MACDONOUGH, or BOSTON, MASSACHUSETTS.

FOUNTAIN-PEN.

Application filed April 10,

To all whom it may concern.

Be it known that I, GEORGE H. MACDON- OUGH, a citizen of the UnitedStates, and a 1 nism is associated withthe pen by means of which thesupply of ink may be renewed, and the object is to provide an improvedconstruction not likely to getout of order and of superior convenienceand durability.

My invention will bebest understood by reference to the followingdescription of a specific embodiment of my invention disclosed by way ofillustration in. the accompanying drawings wherein Figure l is a partelevation and a part longitudinal section through a pen;

Fig. 2 is a partial section on an enlarged scale with the parts inanother position";

Fig. 3 is a plan of the presser bar and attendant mechanism; and

Figs. 1 and 5 are sections on the lines 1% and5-5 respectively, of 1.

Referring to the drawings, I there show. a fountain pen of the typewherein the usual barrel or body? ofthe pen contains an ink reservoir inthe. form of a collapsible sack 9 of rubber or similar material, whichsack may be compressed by means of a suitable presser bar 11. Such astructure is well known and does not require further description. I 3The presser bar 11 is herein operated by lever 13 pivoted at 15 to thebarrel of the pen and having a cranked end portion 17 extending over thebottom or baseof the barrel and terminatingin a finger grip 19substantially alined therewith. The lever 13 works in the longitudinalslot 21 of the barrel, best shown in Fig. 2, which slot terminates shortof the end of the barrel which is thus provided with an unbroken basalclosure 23. The walls of theslotare thus held in definitely spacedrelation ateach end thereof, providing a working space for the leverwhich will freely and yet snugly receive. the same and the shape ofwhich is not likely to be changed in use in such a way Specificationof'Lctters l atent. I Patented (j t 1920 1919. Serial No. 288,998. I

as to either bind on the lever or permit too free mot on thereof. I r

s shown in Fig. 4, the pivot l5 for the spacing means therefor betweenits ends. levermay lie substantially flush with the exterior ofthe'barrel, as shown in Fig. 1. To permitthe exterior to the adjacentits base is provided with a groove '25, best shown in Fig. 2, openinginto the slot 21, whlch groove, however, preferably does not extendthrough the full thickness ofthe barrel wall but leavesa part thereof[intervening as a brace to hold the sides of the slot apart, thuseffectually preventing them from being ammed'together, as for example bythe pressure of the cap 26 when it 1s placed overthelbase of the barrel.If the barrel were'so bent adjacent the slot under I certain conditionsof temperature under which thematerial of the barrel would be provisionof a finger grip '19. barrel, the end of the barrel :lever extendsbetween the walls of the 'slot" and may serve "as a i o In itsclosedposition the to a degree plastic, the barrel might take apermanent set with the walls of the slot ping tight on the sides of thelever 13.

Convenlently the lever 13 is constructed of suitable sheetmaterial of athickness corresponding tothe depth of the slot25. At the left hand endof the lever, viewing the figures, it is provided with flanges 27'p'roviding an operating portion for engagement with the 'pres'serbar11, asshown in Fig. 4, and lending stiffness tothe lever as a whole. Theright hand portionis bent inwardly or cranked at 17 over the base of thebarrel, and

extended somewhat obliquely to avoid the conve'niently this bent endportion may be weakening efiect of too sharp abend and the a.

material of which the leveris formed may be flanged also on the righthand end to strengthenthe same, the'fianges conveniently increasing indepth 'andbeing rolledor bent to provide a substantial'finger grip'19.

To accommodate the portion 17 of the lever, the base 23 of the barrelmay be made of substantial thickness and is conveniently provided withan enlargement or boss 29 for a purpose to be described. As best seen inFig. 2, the base of the boss 29 may be radially grooved, the groove 31communicating with the groove 25 in the side of the barrel,

sloping toward the groove 25 to accommodate the obtusely bent lever andmerging into the same along a-rounded surface 33.

The bent end 17 of the lever 13 seats in the slot 31 when the lever isin closed position and finds substantial support in the end closure ofthe barrel.

To cover and protect the finger grip 19, I may provide a removable cap35*of the same exterior dimensions as the barrel, which may be threadedonto the boss 29 in the manner indicated in Fig. 1.

To support the pres'ser bar 11 within the barrel and to aid in returningit to the position shown'in Fig. 1, after the sack 9 has been defiated,it may be supported by a s'uit'ablespring. Herein the spring comprisesa'split ring 3'7 (see Fig. 5) which may be hbused at the base of thebarrel and 41 (Figs. 3 and 4) formed onthe presser bar 11 and bent overthe sides of the spring tongue 39. To'permit the lever 13 toengagethepresser bar 11 and further to provide a guide for the lever and alsoto aid in p0- sitioning the presser bar and spring properly in thebarrel, the spring arm 39 is provided with a slot l3 (Fig. 3). The endof the lever extends through this slot to make contact with the presserbar 1.1, the lever being guided by the sides of the-slot. In the presentembodiment of the invention the slot is an open-ended slot. In otherwords, the spring tongue 39 is bifurcated, providing a pair of tineswhich are engaged and held to the presser bar 11 by the ears 4:1.

'Havingthus described the particular embodiment of my invention hereinshown by way'of illustration, what I claim as new and desire to. secureby Letters Patent I shall express in the following claims:

1. In a'self filling fountain pen of the type described, a barrel havinga closed end,

a slot in the side and a' groove extending from the slot to the closedend of the barrel,

and an operating lever working in said slot havinga portio'nreceived insaid groove and a portion alin ed with the barrel.

2. In a' self filling. fountain pen of the type described, a barrelhaving a closed end of substantial thickness, a slot in the side of thebarrel terminating above said end, said end having a'radial groove witha sloping bottom, and a lever working in the slot having an obtuselybent portion re ceived by the groove and a terminal portion exteriorlypresented at the base of the barrel.

3. A structure as described in claim 2, wherein the side of the barrelhas a groove extending between the end of the slot and the radial grooveinto which the lever fits.

4. In a self filling fountain pen of the type described, a barrel havinga closed end provided with a boss and having a slot in thesideterminating above saidend, said boss having a substantially radialgroove sloping toward the slot, a lever working in'the slot having anobtusely bent portion receive'dby the groove and a terminal portionalining with the barrel, and a cap fitting said boss to inclose saidterminal portion.

5. In a self filling fountain pen of the class described, a barrelhaving a closed end, having a slot-in the side terminating short of saidend, and also having a groove extending from the slot to said end, and acranked operating lever comprising a plate fitting substantially flushin said groove, having a flanged portion pivoted in the slot and aflanged portion providing a finger grip'at the base of the barrel.

6. In a self filling fountain pen of the type described, a barrel havingan unbroken basal closure and a longitudinal slot along one side of thesame terminating short of the base, and a lever pivoted in the slot andhaving a cranked portion extending inwardl over the base.

7. n aself filling fountain pen of the type described, a barrel havingan unbroken basal closure and a longitudinal slot along one side of thesame terminating short of the base, and a lever having a substantiallyfiat portion, a flanged portion at one side 1 thereof pivoted in theslot and a cranked portion extending inwardly over the base of thebarrel and flanged to provide a finger l griIp.

n testimony whereof I have signed my name to this specification. I

' GEORGE H. MAGDONOUGH.

